Fallos del tipo CWE-20

5887 resultados

Validação inadequada de entrada

A aplicação recebe dados de fontes externas (usuário, API, arquivo) sem verificar se estão no formato, tamanho ou tipo esperado antes de usá-los. Isso permite que um atacante envie dados malformados ou maliciosos que podem causar erros, corrupção de dados, execução de código ou acesso não autorizado.

Ejemplo

Um formulário que aceita um número de idade sem validar se é um inteiro positivo entre 0 e 150. Um atacante envia idade=-5 ou idade='DROP TABLE users;' via SQL, e o código processa isso diretamente no banco sem sanitização, causando dano.

Cómo mitigar

Valide TODA entrada externa: verificar tipo, tamanho, formato e intervalo permitido antes de usar. Use whitelists (aceitar apenas valores conhecidos como seguros) em vez de blacklists, e aplique sanitização ou prepared statements para dados que vão em queries. Testes de entrada fuzzing também ajudam a encontrar gaps.

CVE-2022-24861CRITICALRemote Code Execution in DatabasirEPSS 3.0%CVE-2016-9219—A vulnerability with IPv6 UDP ingress packet processing in Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remoEPSS 3.0%CVE-2021-26622CRITICALGenian NAC remote code execution vulnerabilityEPSS 3.0%CVE-2018-0264—A vulnerability in the Cisco WebEx Network Recording Player for Advanced Recording Format (ARF) files could allow an unauthenticated, remoteEPSS 3.0%CVE-2022-34916—Improper Input Validation (JNDI Injection) in JMSMessageConsumerEPSS 3.0%CVE-2021-0158MEDIUMImproper input validation in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of EPSS 3.0%CVE-2022-32786MEDIUMAn issue in the handling of environment variables was addressed with improved validation. This issue is fixed in Security Update 2022-005 CaEPSS 3.0%CVE-2018-0349—A vulnerability in the Cisco SD-WAN Solution could allow an authenticated, remote attacker to overwrite arbitrary files on the underlying opEPSS 3.0%CVE-2017-7466HIGHAnsible before version 2.3 has an input validation vulnerability in the handling of data sent from client systems. An attacker with control EPSS 3.0%CVE-2020-10738HIGHA flaw was found in Moodle versions 3.8 before 3.8.3, 3.7 before 3.7.6, 3.6 before 3.6.10, 3.5 before 3.5.12 and earlier unsupported versionEPSS 3.0%CVE-2023-36566MEDIUMMicrosoft Common Data Model SDK Denial of Service VulnerabilityEPSS 3.0%CVE-2017-3825—A vulnerability in the ICMP ingress packet processing of Cisco TelePresence Collaboration Endpoint (CE) Software could allow an unauthenticaEPSS 3.0%CVE-2021-42114CRITICALScalable Rowhammering In the Frequency Domain to Bypass TRR Mitigations On Modern DDR4/LPDDR4X DevicesEPSS 3.0%CVE-2025-34113HIGHTiki Wiki CMS Authenticated Command Injection in Calendar ModuleEPSS 3.0%CVE-2025-34161CRITICALCoolify Git Repository Field Command Injection in Project Deployment WorkflowEPSS 3.0%CVE-2018-0345—A vulnerability in the configuration and management database of the Cisco SD-WAN Solution could allow an authenticated, remote attacker to eEPSS 3.0%CVE-2022-26781CRITICALMultiple improper input validation vulnerabilities exists in the libnvram.so nvram_import functionality of InHand Networks InRouter302 V3.5.EPSS 2.9%CVE-2021-35223HIGHExecute Command Function Allows Remote Code Execution (RCE)VulnerabilityEPSS 2.9%CVE-2020-7071MEDIUMFILTER_VALIDATE_URL accepts URLs with invalid userinfoEPSS 2.9%CVE-2019-1687MEDIUMCisco Adaptive Security Appliance Software and Firepower Threat Defense Software TCP Proxy Denial of Service VulnerabilityEPSS 2.9%